123989698 has 32 divisors (see below), whose sum is σ = 220521600. Its totient is φ = 52249680.

The previous prime is 123989669. The next prime is 123989717. The reversal of 123989698 is 896989321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40365 + ... + 43327.

It is an arithmetic number, because the mean of its divisors is an integer number (6891300).

Almost surely, 2^123989698 is an apocalyptic number.

123989698 is a deficient number, since it is larger than the sum of its proper divisors (96531902).

123989698 is an equidigital number, since it uses as much as digits as its factorization.

123989698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047 (or 3033 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 55.

The square root of 123989698 is about 11135.0661425965. The cubic root of 123989698 is about 498.6492850908.

The spelling of 123989698 in words is "one hundred twenty-three million, nine hundred eighty-nine thousand, six hundred ninety-eight".